A Pure Sample of the R Enantiomer of a Compound $\circ$

question 8

Multiple Choice

A pure sample of the R enantiomer of a compound has a specific rotation, [\9\alpha\) ], of -5 ^$\circ$ . A solution containing 0.6 g/mL of a mixture of enantiomers rotates plane polarized light by -3 ^$\circ$ in a 1 dm polarimeter. What is the enantiomeric excess (%ee) of the mixture?

• A)33% R
• B)33% S
• C)50% R
• D)75% R

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Definitions:

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